Signal-lantern



(No Model.)

W. K. BEARD, 8: J. M. RAYMOND.

SIGNAL LANTERN.

Patented JaJn. 17, 1888.

Witnesses 'ihvir'nn Srarns PATENT @FFEQE.

WVILLIAM K. BEARD, OF LANCASTER, AND JOHN M. RAYMOND, OF FLORIN,

. PENNSYLVANIA.

SlGNAL LANTERN.

QPECIPICATION forming part of Letters Patent No. 376,573, dated January 17, 1888.

Application filed June .2, 1887. Serial No. 240,020. (No model.)

To all whom it may concern: Be it known that we, WILLIAM K. BEARD, of Lancaster, and J OHN M. RAYMOND, of Florin, both being in the county of Lancaster and State of Pennsylvania, have invented certain new and useful Improvements in Signal-Lanterns; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The object of the invention is the construc tion of a signal-lantern with the entrance and exit ports or openings for ventilation adjustable, by this means enabling the operator to adapt said lantern to withstand storms and other excessive drafts of air, and thus prevent the burning lamp inside from being extinguished. v

Our invention will be more readily understood, reference being had to the accompanying drawings, in which similar letters refer to similar parts throughout the several views.

Figure 1 is a front elevation, and Fig. 2 a side elevation, showing the door, and with a portion of the dome cut away to show the face of the movable cap. Fig. 3 is an elevation of the oppositeside, showing a socket for attaching the lantern to a signal post or tower; also, the top partly open. Fig. 4 is a plan View of the bottom, showing ventilating-slides, two being open and two closed. Fig. 5 is a view of the top-movable cap and smoke and heat guard removed, the handle being in a horizontal position. Fig. 6 is a top view of movable cap, shown in elevation in Fig. 7. 'Fig. Sis a top view of smoke and heat guard, shown in elevation in Fig. 9. Fig. 10 is a longitudinal Vertical section through the line 00 00, Fig. 4. In the accompanying drawings, A represents the body of a signal-lantern; A, the door through which the lamp may be manipulated; A, the top, hinged or otherwise attached to the said body; a, the handle by which the same is carried; a, the socket by which said body is suspended from any suitable projection.

By reference to Fig. 1-0 the-principle of our construction will be clearly understood. Rigidly attached. to it and around an opening, B,

in the top A is an upwardly-projecting tubular collar, B, its internal diameter being handle a are sprung in suitable openings in the side of the aforesaid collar 13', projecting inwardly, as shown in Fig. 5. A movable cap, D, has a downwardly-projecting rim, D, tubular in form, adapted to fit inside the aforesaid collar B, said rim D being partially bisected by slots (1, projecting upward from .its

lower edge and having at their upper ends lateral elongations d, as shown in Fig. 7. Then the cap D is inserted in the collar B, the slots at inclose the ends 0* of the handle a, the elongations d allowing a partial rotating movement to the cap D.v When in position,

as in Fig. 10, openings 6 c e are perforated through both the collar A and the rim D of the cap D, which allow the escape of smoke and heat and under ordinary circumstances may be left open to their full capacity; but when in storm or exposed places subject to excessive drafts may be partially closed by the aforesaid rotary movement of the cap D, as described. As an additional protection from said current of air, the heat-guard O is provided, the force of the rarefied air concentrated by its cone-shaped base and escaping from under the downwardly-projecting flange c of the cap a, effectually preventing ingress in this direction sufficient to extinguish the lamp.

WVedo not confine ourselves to the tubular form of our movable cap or its retaining-collar, as it is evident various forms might be used, yet involve no additional invention, for, if rectangular in form, it would only be necessary to give the cap a slight vertical instead of rotative movement to adjust the openings e e e and accomplish essentially the same result. The necessary supply of fresh air-to support combustion is furnished through ventopenings f f f f in the bottom plate, F, said openings ffff being covered by independent slidesffff, working in guides f f f f and adapted to be moved partially or entirely over the openingsffff by suitable lugs, f f f f Any number of openings might be used 5 if manipulated in the same manner; but we find four work to very good advantage, and the best results are given if the alternate corners are partially or entirely closed at the same time, as is shown in Fig. 4. Various :0 constructions of sliding lids may be used to cover the openings f f f f, the result in all cases being essentially the same when said openings are in the bottom plate.

Having thus described our invention, what 1 5 we claim as new, and desire to cover by Letters Patent of the United States, is

In a lantern, the perforated tubular cap D, having upright slots (1 and transverse slots d, connecting with the upper ends thereof, in combination with handle at, having ends bent 20 into said slots and movable therein, and a fixed perforated collar, within which said cap fits, said cap being free to turn on said collar. (7

In testimony whereof we have hereunto subscribed our names in the presence of two sub- 2;, scribing witnesses.

WILLIAM K. BEARD. JOHN M. RAYMOND.

Witnesses:

J. L. LYTE, WM. J. Mine 

